Window screen



Nov. 13, 1951 RENZETTI 2,575,128

. wmnow SCREEN Filed Sept. 11, 1950 2 SHEETSSHEET 1 Fig.

Fig. 2

jig: 26 22 Luigi Renze/r/ -INVENTOR.

I 1 BY L. RENZETTI WINDOW SCREEN Nov. 13, 195] 2 SHEETS-SHEET 2 Filed Sept. 11, 1950 Fig.3

Luigi Renzerri INVENTOR.

Patented Nov. 13, 1951 UNITED" STATES PATENT OFFICE WINDOW SCREEN Luigi Renzetti, Medford, Mass.

Application September 11, 1950, Serial No. 184,293

This invention relates to new and useful improvements and structural refinements in window screens, and in particular the instant invention concerns itself with certain improvements in the window screen covered by United States Patent No. 1,942,308, which was granted to me on January 2, 1934.

While experimenting and using the window screen constructed in accordance with the teachings of my prior patent, I found that the same lends itself to certain structural and functional improvements, and it is, therefore, the principal object of the instant invention to provide a window screen wherein such improvements are embodied.

Some of the advantages of the invention reside in its simplicity of construction, in its efiicient operation, in its convenient discerptibility for purposes of inspection or repair, and in its adaptability to economical manufacture.

With the above more important objects and features in view and such other objects and features as may become apparent as this specification proceeds, the invention consists essentially in the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a fragmentary elevational view of a window showing the invention in association therewith;

Figure 2 is a horizontal sectional view taken substantially in the plane of the line 2-2 in Figure 1;

Figure 3 is a fragmentary vertical sectional view, taken substantially in the plane of the line 33 in Figure 1;

Figure 4 is a fragmentary sectional detail, taken substantially in the plane of the line 4-4 in Figure 3;

Figure 5 is a perspective view of one of the socket and track-forming members used in the invention;

Figure 6 is a fragmentary perspective view showing one end portion of the screen housing;

Figure 7 is a perspective view of one of the screen controlling units; and

Figure 8 is a fragmentary perspective view showing a portion of the roller and screen.

Like characters of reference are employed to designate like parts in the specification throughout the several views.

Referring now to the accompanying drawings in detail, the general reference character It designates a window sash slidable vertically in a window frame 12, while the invention resides in the provision of a window screen which is desig- 1 Claim. (01. 160--2s) nated generally by the reference character l4.- This window screen, which, in effect, is an attachment to the window, embodiesits'co'n struc'tion a pair of vertically elongated members Itwhich are adapted to be secured o posing relation to the opposite sides of the window frame 12;- Each of the members It affords a'vertical track l8 and an enlarged socket 20 at the lower end of the track, this being achieved, preferably, by forming the member from strap material, and angulating the same so that it assumes the configuration shown in Figure 5. superposed flanges 21 are provided at longitudinal edges of the strap from which the member I6 is formed, and these flanges, in turn, are equipped with apertured lugs 22 to receive suitable fastening elements such as screws 24 or the like, whereby the members It are rigidly secured to the window frame I2.

A horizontally elongated housing 23 has the opposite end portions thereof disposed in the sockets 2B of the member l6, it being noted that the housing as well as the sockets are configurated complementally with fiat and arcuate faces, so that rotation of the housing in the sockets is impossible. Moreover, the housing 26 is provided with a longitudinally extending slot 28 which, at the ends thereof, communicates with the tracks l8 of the member I6, as is best shown in Figure 3.

A screen controlling unit designated generally by the reference character 30 is removably positioned in each end of the housing 26, each of the two units 30 embodying in its construction a suitable casing 32 in which is rotatably journaled a shaft 34. The casing 30 also accommodates a spiral sprin 36 one end of which is secured to the shaft 34 while its other end is secured to the casing, it being noted that the shaft 34 projects outwardly from the casing and carries a pair of keys 38 (see Figure 7).

A screen roller 40 extends longitudinally in the housing 26 and is either tubular or has tubular end portions so as to receive the shaft 34 of the units 32, and it is also to be noted that the end portions of the roller 40 are provided with diametrically opposed slots 42 to accommodate the keys 38. By virtue of this arrangement, the roller 4|] is supported by the shafts 34 and is rotatable therewith.

Moreover, it is to be noted that the slots 42 are open-ended so that the keys 38 may be withdrawn therefrom, thus facilitating separa? tion of the units 32 from the roller 40 and also facilitating removal of the units 32 from the sockets 20 of the members I6.

In any event, a sheet of foraminous material or screen 44 is secured to the roller 40 by a longitudinally extending strap 46 and is windable on the roller, that is, when the roller is rotated, together with the shafts 34, in the direction of the arrow 48 (see Figure 3).

The screen 44 extends outwardly through the slot 28 in the housing 26, and the upper edge portion thereof is secured by a channel 50 and by suitable screws-52 to the lower edge of the sash I0, while the side edge portions of the screen 44 as well as the end portions of the channel I the screen 44 will be unwound from the roller 40 and will be drawn over the windowgopening. Conversely, when the sash I0 is lowered, the springs 36 which have been "wound by the unwinding of the screen 44, will cause the screen to wind itself back on the roller 40.

It is believed that the advantages and use of the invention will be clearly understood from the foregoing disclosure, and accordingly further description thereof at this point is deemed unnecessary. 7 v

' Having described the invention, what is claimed as new is: e r

A window screen comprising a horizontally elongated housing, a pair of screen controlling units removably positioned in opposite ends of said housing and including a pair of spring actuated coaxial shafts, a roller extending in said housing between said shafts, a screen windable on said roller and extending upwardly from said housing for attachment to a vertically slidable window sash, and laterally projecting keys on said shafts, saidyroller being tubularand receiving said shafts in the opposite end portions thereof, the opposite end portions of the roller being provided with open ended slots to receive said keys, whereby the shafts and the roller are operatively connected.

LUIGI RENZE'I'II.

Number Name" I r 1,135,563 Watson Apr. 13, 1915 1,844,599 Renzetti- Feb. 9, 193g 

